Paper milk bottle



J. wAlNwRlGHT, JR 1,968,727

PAPER MILK BOTTLE Original Filed July25, 1930 2 Sheets-Sheet l July 3l, 1934.

INVENTOR rvr-'Zlf;

ATTORNEY July31, 1934 J. wAlNwRlGHT, JR

PAPER MIL|K BOTTLE original Filed July'z, 1930` fr' ,z ZZ' 21%@ ATTOR N EY Patented July 31, 1934 UNITED STATES PATENT OFFICE PAPER MILK BOTTLE delphia, Pa.

Application July 25, 1930, Serial No. 470,702 Renewed January 3, 1934 12 Claims. (Cl. 229-45) 1 0 It is Well known that patents have been granted on` paper bottles or containers, and especially on milk bottles, hence there is no broad claim 4 contemplated for a container made of paper.

Also, Patents 1,724,517 and 1,218,984 have been l granted to H. B. Rudd and Frederick Coates covering paper bottles. In the former one, the neck of the bottle is corrugated, the mouth end of the bottle with a ring located at the mouth end, while in the latter the neck from midway M of the bottle to the mouth end is likewise corrugated, but the corrugations are larger, and are rectangular, terminated in -a mouth end ring. However, experiments have shown that these style bottles are incapable of being handled by the nowl extensively used filling machines, and

furthermore will not accommodate the newer style cap which fits over the mouth end of the bottle for the purpose of insuring sanitation.

With these disadvantages in mind, it is the purpose of the present invention to provide an and terminating in a mouth end ring or ange,

,which is of the exact size to receive the now extensively used overiitting cap, as well as receiving the old style cap, which engages within the mouth end of the bottle on an annular ledge.

In constructing an improved bottle or container of this kind, it is the purpose to so score theone piece blank that the speciallydesigned machinenow shown may first fold the blank to make the reinforcing midway the height of the bottle, and `folding the blank-for the purpose of contracting the bottle from the reinforcing to the mouth end of the bottle, which mouth end is formed by opposite die members under hydraulic pressure, the wall of the mouth end be- Y ing formed with a filler of paper pulp or similar material, over which the paper of the one piece bottle is folded and under extreme high pressurethe pressure being such as to render the folds hardly perceptible.

Another purpose is to provide a paper bottle of a size and shape very closely resembling the usual glass milk bottle, and though slightly modied in contour, the present type of milk bottle may easily and conveniently be handled by filling machines now extensively used.

It isto be understood that the particulars herein given are in no way limitative, and that while still keeping within the scope of the invention, any desired modification of details and proportions may be made in the construction of the appliance according to circumstances.

The invention comprises further features and combination of parts to be hereinafter set forth, shown in the drawings and claimed.

Figure 1 is a view of a one piece paper blank, from which, excepting the bottom of the container, a milk bottle may be formed from the bottom margin to the mouth end, the blankV being so scored that it can be folded substantially midway its'height, and then folded at a plurality of locations to construct a contracted or tapered portion of the bottle above the first fold, the paper beyond the second folds being sufficient `to form the mouth end ring of the bottle.

Figure 2 is a view Vof the blank showing it folded at one location.. f

Figure 3 is aview of the blank with its two ends adhesively fastened, which forms a cylinder at both ends. i

Figure 4 is a View of the cylinder showing the folds in the length of the bottle from its first fold to the mouth end ring of the bottle.

Figure 5 is a view showing the paper beyond the longitudinal folds as having been constructed and partially forced into the mouth end of the bottle over a filler of pulp which forms the mouth end ring or flange.

Figure 6 is a perspective view of the completed milk bottle.

Figure 7 is a perspective View showing the new now extensively used overfitting cap asapplied to the completed milk bottle.

Figure 8 is a vertical sectional ViewV through Figure 6 on line 8-8 thereof, but showing an old Referring to the drawings:-

l identifies the one piece blank, which may be any size, depending entirely on the size of the bottle; viz. whether or not the bottle to be constructed is adapted to contain a gill, a half pint, pint, or a quart of milk. This blank is scored at 2 and 3, on which the blank is first folded, during the process of making the bottle. The blank is also provided with a marking at 4, from which the longitudinally scored lines 5 extend, and from which the slightly diagonally scored lines 6 extend. The blank is also provided with a marking as identified at '7 from which the paper 8 of the blank beyond the marking 'l is outwardly swelled and then contracted and finally forced inwardly. In fact, the blank is folded upon lines 5 and 6, which causes the cylinder constructed from the blank to be contracted from the reinforcing 9 caused by the folds on the scored lines 2 and 3. The folds on the scored lines 5 and 6 permit the paper 8 beyond the marking 7 to be swelled and then contracted and finally forced within the interior of the mouth end of the bottle.

When the paper 8 beyond the marking '7 is swelled and then contracted and finally forced in, a paper pulp filler ring 10 is arranged in position as shown in the drawings, which insures providing for a body to the mouth end ring or flange. When the paper 8 is forced inwardly, it terminates as shown at l2 incident to the annular ledge or shoulder 13, which forms a part of the filler ring. The bottle may be suitably paraffined either at the time of its formation or subsequently, to insure sanitation.

As shown in Figures 5 and 11, a bottom 14 is provided, which is made from a single blank, bent to form a flange 15, which is provided with lapping folds 16. This bottom 13 is inserted in the cylinder, and then the lower margin of the cylinder and the flange are overlapped and folded as indicated and under hydraulic pressure, thereby insuring construction of a clinched joint similar to a conventional type of tinners joint. The opposite edge portions 17 and 18 of the blank are joined by a conventional type of tinners or double lap joint, when the blank is formed into a cylinder as in Figure 3. This construction is to insure against leakage when the bottom is completed.

However, in Figure 12 a single lap jointl 19 is provided for the opposite edges 17 and 18 of the blank.

The invention having been set forth, what is claimed is:

1. A milk bottle having a single piece wall from the bottom thereof to the mouth end, the wall of the bottle at the mouth end being swelled outwardly and upwardly, a ring filler in the mouth end, the outwardly and upwardly swelled portion ikileling constructed over and inwardly of the ring 2. A milk bottle having a taper from the approximate center of the wall of the taper to the mouth end thereof, said tapered wall having a plurality of folds, said folds greatly increasing to the mouth end of the bottle, the wall of the bottle being swelled outwardly and folded over and inwardly to form the mouth end of the bottle, and a ring filler for the over and inward fold of the mouth end.

3. A milk bottle having a taper from the approximate center of the wall of the taper to the mouth end thereof, said tapered wall having a plurality of folds, said folds greatly increasing to the mouth end of the bottle, the wall of the bottle being swelled outwardly and folded over and inwardly to form the mouth end of the bottle, and a ring filler for the over and inward fold of the mouth end, said outward swelled portion forming a flange or shoulder at the mouth end, the diameter of said flange or shoulder being such as to receive a combined cover and inner fitting milk bottle cap.

4. A milk bottle having a taper from the approximate center of the wall of the taper to the mouth end thereof, said tapered wall having a plurality of folds, said folds greatly increasing to the mouth end of the bottle, the wall of the bottle being swelled outwardly and folded over and inwardly to form the mouth end of the bottle, and a ring filler for the over and inward fold of the mouth end, said outward swelled portion forming a flange or shoulder at the mouth end, the diameter of said flange or shoulder being such as to receive a combined over and inner fitting milk bottle cap, said mouth end of the bottle having an inner annular ledge to support an inner fitting disk milk bottle cap.

5. A mouth end for a paper milk bottle, said mouth end comprising a tapered layer swelled outwardly and upwardly, a paper pulp ring filler o arranged inwardly of said layer and having an inner annular ledge, said layer being folded over and inwardly of the ller and terminating adjacent the marginal edge of the ledge.

6. In a process for the manufacture of a paper bottle from a rectangular blank, the steps consisting in folding the blank longitudinally, which reinforces the bottle transversely and annularly, previously scoring the blank to form the fold, scoring the blank at right angles to the first scoring but transversely of the blank, scoring the blank at obtuse angles to the second scoring, rolling the blank to form a cylinder, and then connecting the opposite ends of the blank, giving the blank a plurality of folds on the second and third scorings, and then finally rolling one marginal edge portion of the blank where the second and third scorings terminate over and within a ring filler.

7. In a process for the manufacture of a paper bottle from a single rectangular blank, scoring the blank transversely from a point approximating the longitudinal center of the blank toward one longitudinal edge, arranging the scoring at spaced intervals, constructing the scorings in two sets, the scorings of each set performed in parallelism, arranging the scorings of one set at obtuse angles to the scorings of the other set, rolling the blank to form a cylinder and connecting the opposite ends of the blank, folding the blank on certain of said scorings and finally rolling one longitudinal portion adjacent one edge of the blank where the scorings terminate over and inwardly of a ring filler, and finally applying die pressure on the folded parts and connected ends and the rolled longitudinal portion to form the bottle.

8. A paper milk bottle, comprising a single rectangular blank, said blank being rolled to form a cylinder, means connecting the ends of the blank, folds made transversely of the blank from a point approximating its longitudinal center toward one longitudinal edge portion of the blank, said folds being made on previously scored lines, a ring filler to form a flanged body for the mouth end of the bottle, said longitudinal portion of the paper adjacent one edge being rolled around and inwardly of the filler under substantial pressure, thereby forming the mouth flanged end of the bottle,

VIl 10 9. A one piece blank of prescribed length and width for forming a milk bottle, the circumference of the bottle being formed from the length, the height of the bottle being formed from the width, said blank being scored from an approximate center toward one longitudinal edge of the blank, certain of the scoring being divergent, certain other of the scoring converging, whereby the blank may be shaped to form the bottle with a taper, the tapered end of the bottle formed thereby, having a mouth end, the wall of the bottle at the mouth endk being swelled outwardly and upwardly, aring ller in the mouth end, the outwardly and upwardly swelled portion being constructed over and inwardly of the ring filler.

10. A one piece blank of prescribed length and width for forming a milk bottle, the circumferenceof the bottle being formed from the length, the height of the bottle being formed from the width, said blank being scored from an approximate center toward one longitudinal edge of the blank, certain of the scoring being divergent, certain other of the scoring converging, whereby the blank may be shaped to'form the bottle with a taper, said approximate center of the blank being scored in parallelism longitudinally whereby the blank may be folded to form a multiple ply reinforcing transversely about the circumfer ence of the bottle, the tapered end of the bottle formed thereby, having a mouth end, the wall ofthe bottle at the mouth end being swelled out- "wardly and upwardly, a ring ller in the mouth end, the outwardly and upwardly swelled portion being constructed over and inwardly of the ring filler.

11. A milk bottle having a mouth end and its wall composed of moldable fiber, the wall of the bottle at the mouth end being swelled outwardly .and upwardly, a ller in the mouth end, over and inwardly of which the swelled portion is compressed, completing the mouth end, the inwardly extending part of the swelled portion and the iiller on the interior of the mouth end being formed with a milk bottle cap engaging shoulder.

12. A milk bottle comprising a one piece blank having a prescribed length from which the circumference of the bottle may be formed, and provided with a prescribed Width from which the height of the bottle may be formed, said blank being scored from an approximate center toward and terminating adjacent one longitudinal edge of the blank, certain of the scoring being divergent, certain other of the scoring being convergent, whereby the blank may be .shaped to form the bottle with a taper, said approximate center of the blank being folded upon itself on longitudinal parallel scored lines to form a multiple ply reinforcing transversely about the circumference of the bottle and thereby constituting a limiting abutment for the divergent and convergent scorings, the smaller terminal of the tapered portion of the bottle having a mouth end.

JONATHAN WAINWRIGHT, JR. 

